[patch] guard against null, coffgen.c

[msnyder@sonic.net]

> On Wed, Jul 25, 2007 at 06:48:44PM -0700, msnyder@sonic.net wrote:
>> 	* coffgen.c (fixup_symbol_value): Guard against null;
>> 	bfd_is_com_section will dereference the section pointer.
>
> OK.

Thanks - committed.